Atest Gaz Alpa EcoTerm XT, User Manual

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9.2.2.1 Star system
Figure 8: Connection into the star system
The configuration switch is always set in position 2 (last detector). For details, see section 7.
Distribute connection cables in the facility, leaving appropriate reserve for connecting the
detectors.
Install and provide power to the control unit. After the power supply is switched on, the state of
"FAILURE" should be shown due to the lack of connected detectors. Turn off power to the control
unit.
Mechanically fastened detectors on the object.
Connect the output of the first detector to the cable going into the control unit. The configuration
switch in the detector should be in position 2 (last detector) – see Figure 8.
Connect cables leading from each specific detector to a relevant channel of the control unit. Upon
powering up the control unit should indicate the ‘OPERATION’ (‘PRACA’) mode and the indicator
LED on the detector shall blink during one minute (according to the sequence presented in Table 4
for the heating operation). After expiration of the heating time the LED should be permanently on
or blink with green light.
If the control unit shows the "FAILURE" status – check and eliminate the possible connection
errors.
If the control unit shows the state of "WORK" – perform the test of the detector operation. For
this purpose, force "ALARM" by pressing the "TEST" button in the detector. The control unit should
indicate "ALARM."
Turn off the power supply.
Repeat the installation steps for further detectors.
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User Manual: POD-044-ENG R01
Unused terminal S2
- - - - -
Control Unit